<template>
  <el-breadcrumb class="app-breadcrumb" separator="/">
    <transition-group name="breadcrumb">
      <el-breadcrumb-item v-for="(item,index)  in levelList" :key="item.path" v-if="item.meta.title">
        <span v-if="index==levelList.length-1" class="no-redirect">{{item.meta.parames?paramesTitle(item.meta.parames):item.meta.title}}</span>
        <router-link v-else :to="item.redirect ? `${item.redirect}?t=${+new Date()}` : `${item.path}?time=${+new Date()}`">
          {{item.meta.title}}
        </router-link>
      </el-breadcrumb-item>
    </transition-group>
  </el-breadcrumb>
</template>
<script>
export default {
  name: 'Breadcrumb',
  created() {
    this.getBreadcrumb();
  },
  data() {
    return {
      levelList: null
    };
  },
  watch: {
    $route() {
      this.getBreadcrumb();
    }
  },
  methods: {
    paramesTitle(val) {
      var _parames = val && JSON.parse(val);
      var _name = this.$route.params.name;
      return _parames && _parames[_name];
    },
    getBreadcrumb() {
      let matched = this.$route.matched.filter(item => item.name);
      const first = matched[0];
      if (first && first.name !== 'dashboard') {
        matched = [{
          path: '/dashboard',
          meta: { title: '控制台' }
        }].concat(matched);
      }
      this.levelList = matched;
    }
  }
};

</script>
<style rel="stylesheet/scss" lang="scss" scoped>
.app-breadcrumb.el-breadcrumb {
  display: inline-block;
  font-size: 14px;
  line-height: 50px;
  margin-left: 10px; // color: #97a8be;
  .no-redirect {
    color: #fff;
    cursor: text;
  }
}

</style>
